"Puristic" is a term that describes an overly strict and dogmatic adherence to a particular set of standards or rules. Synonyms for this term may include rigid, uncompromising, doctrinaire, dogmatic, inflexible, and puritanical. These words all convey a sense of rigid adherence to rules and a reluctance to deviate from established beliefs or practices. Other synonyms for puristic might include strict, purist, and traditionalist. Ultimately, choosing the right synonym for puristic will depend on the context in which it is being used and the tone that the writer wishes to convey.